Lubricating device



March 16 1926.

w 0. il 1 @w55 MVM Aww/MA J.' B. HAYDEN ET AL LUBRICATING DEVICE Filed Sept. 14

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Patented Mar. 16, 1926.

UNITED STATI-:s PATENT OFFICE.

JOSEPH BENNETT HAYDEN, JOHN MORRIS, AND HARRY CLINTON GEORGE, 0F

' GREENSBURG, PENNSYLVANIA.

LUBRICATING DEVICE.

Application led September 14, 1923. Seria1 No. 662,674.

To all lw/Lom t 'may concern:

Be it known that we, JOSEPH BENNETT HAYDEN, J oHN'MoRRIs, and HARRY CLINTON GEORGE, citizens of the United States, residing at Greensburg, in the county of West-` moreland and State of Pennsylvania, have invented certain new and useful Improvements in Lubricating Devices; and we do declare the following to be a full, clear, and

vention is to provide a lubricating device byv means of which lubricant may be initiallyr Ifed towards the part to be lubricated from a low pressure cylinderA and then forced into the part to be lubricated under high pressure.

Another object of the invention is to provide a lubricating device in which the low pressure cylinder may constitute a reservoir for carrying the main body of the lubricant and be carried by the high pressure device so that a quantity of heavy grease can be forced under low pressure into the high pressure cylinder without4 the main body of the grease being acted upon by high pres-` sure and the grease to be applied to the part to be lubricated then forced from the -high pressure cylinder through a tube leading to the part to be lubricated through the medium of a plunger reciprocating in the high pressure cylinder. i

Another 'object of the invent-ion is to provide a lubricating device in which the cylin' der may be formed in two sections, one of which will have threaded engagement with a piston-carrying stem connected with the high pressure cylinder and the second of' which may be bodily removed from the first to permit filling of the second section with the piston positioned entirely within the first section. j

This invention is illustrated in the ac companying drawing, wherein:

Flgure 1 is a view showlng the improved lubricant applying device, the view being partially .in longitudinal section and partially in side elevation.

.one of which will form an a Figure 2 is an enlarged sectional view through the means for connecting the hose part of the machine to be lubricated. 1 I

Figures 3 and 4 are transverse sectional views taken along the lines 3,-3 and 4.-4 of Fig. 2 respectively.- v

Figure 5 is a perspective view of the nipple to be applied to the part to be lubricated and a fragment of the coupling carried by the hose.

Figure 6 is a fragmentary longitudinal sectional view through the h ose coupling.

This improved lubricating applying device is for'use in applying heavy grease to a machine to be lubricated and wlll beso constructed that the heavy grease can be forced through the lubricant inlet 1 of a bearing 2 under very high pressure. In order to conneet the hose of the device with the bearin there has been provided a nipple 3 which 1s hollow and has a threaded end portion to be screwed into the outer end portion of the lubricant passage 1. This nipple has been provided with inturned flanges at its -inner and outer ends, thus forminor seats 4 and 5, Labutment flange or seat for the inner end of the spring 6 and the other of which will form a seat for the ball valvel 7 positioned in this nipple and yieldably held in engagement with the seat 5 by the spring 6. Side arms or lugs 8 extend from opposite sides of the body of the nipple 3 as shown in Figs. 2 and 5, so that the nipple may be firmly but releasably engagedfby a coupling to be hereinafter described.

The grease which is to be applied to the bearing 2 is stored ina cylindrical container 9,-the lower end portion 10 of which is formed separate from the main body thereof and releasably connected therewith by means of a threaded 'oint l1. It will thus be seen that when desired,1 this cylinder 9 may be removed from the cup or lower end p0rtion 10 and filled with grease by being driven permitted 'to A"escape through vthe lvent A12.

'After thebylinder has beenlfilled, the plug will'be repl aced. The cup 10 has`been prou vided .wit

a central opening in which is positioned-' an internally threaded nut 14, the lnnrend' portionlofwhich is provided with anoutstanding collar toengage the inner facebf the 'cup'. head and the outer'end portion of which isV externally' threaded and lengaged by a securingnut 16. This. securing nut 416 engages the outer face of the cup headv andserves to securely hold the nut 14 in place and 'rovid a-very tightconnection'between t e coupling and thehead of the cup about the opening through which.

. the nut extends.

'gage with the threads-of the nut- 14 vter- [minate in spaced relation to the outer end of the .piston-rod Aand they also terminate in spaced relation to the inner end 'the1'eo f. The'pston block 20 which is quite thlck 1s positmnedupn .the 'unthreaded inner endl portion"'Z`,1' 'of4 this piston -rod and rests against the inner end'of the heavy thread 19. ump cup 22 lits upon the unthreaded .en portion 21 of the piston rod' and against the piston and a metal washer23 is' then .I )llace and engaged by a' securing nut. c

2 4 whi isscrewed upon the end 4of the pis- .toni rod, It will vthus'be seen that lthe pis- 1 0 and the internally threaded coupling c lar.11.`j' Therefore, when the cylinder 9 is 'tof be filled with greasegthe entire piston` ton', p` un1pV cup and washer which retains the ciipln. the ropxer 'shape will be firmly held yini place. t s ould be further noted .that the 'distance between the lowerl end face of vwall ofthe pump cup .22 is no greater than the distance between the bottom of theonlp Ican be; positioned in the cup 10 and the cyllinder 9 can be removed and refilled and then replaced very easilyand without interference by the 4flaring Walls. of the pump cup.

l The grease which is. forced from the low -pressure cylinder -is Ato befactedpon by a 55 igh -pressure-'cylinder and. t-husforced under highpressure into't'he bearing without the main body. of the' vease inthe low pressure cylinder being 'su jected vto alhi'gli p'r'es sure.- Thisv high pressure cylinderv is lopen at its end and intermediate' its len'gthfhas beeny provided*'fw-ith" av side extension 2 6. In ""extensi'on 26, there 'has' been ,provided ease 'inlet passagef27-which leads-:from 'readed socket 2'8sinto' which ifs `screwed the lower endl-'portion of rjhe' piston Ind-17:

` YVhen this piston rod fis screwed 'into the side extension 26, the grease vpassage 27 will form a continuation of the passage 18 so 'I that when the cylinder 9 is turned andmoved downwardly 'upontheapiston rod, thev grease whlch 1s in this cylin er 9 above the piston will 'be forced through-the passages 'l8.and I 27 intol the vcylinder 25. At its rear end, :the cylinder. has been provided with spacedarms 29, the vfree end portions 30 of which extend `downwardly and are provided withy alined openings to receive a-pivot pin f 31 which extends throu 'h a slot 32 i'n the handle 33 "and -thus slixably and pivotally mounts the handle between the arms l29'.

pivot pin 34 which serves to. piw'fotallyv con-A This handle has a' flared lower endportion' neet the handle with' the rear en d. portion of. s

.the plunger 35 of the'high pressure pump. This lunger 35'slides longitudinally 1n the cyhn. er 25 and whenvthe4 handle is swung .upon the pivot pin 315 'this plunger will.

" havemovernent in the cylinder25 from a posltion with its forward end vto the rear of the inlet port'27 to -thepQsiton shown i I in Fig.- 1. Itwill thus be seen that .with

low pressure intothe Aforward .end portion forward end portion of the cylinder 25 -then '95 the Vplunger drawn rearwardly,the cylinder-- 9 may befturned to` force the grease under.

expelled from the same under hi h pressure by. means ofthe plunger`35 an [handle 33.V

and ,this grease 'forced into the hose .36A

which is connected with the/ forward end 1 i portion of the :cylinder 25 by means4 f a conventional type of cou] ling.37.v `This hose los 36 will be of any. suitablelength so that with l' the-:piston 20 and the edge of the annular the cylinder 25' mounted at any convenient pomt where it may be held firmly in place,

the coupliugwhici is providedfat; the free end .of the hose and indicated in general.

by the numeral 38 may be securely but releasably connectedwith a nipple of. any bearing upon thel automobile or otherl machine i to be lubricated. Itwill 'of course be .under- .stood that one oithemipples?, .willbe rovided for each bearing'a'nd that the cou-p ing filled with thelubricant.

-and `vvillb'e provided with an outer casing .'39`15and 'an' innersieve 40 which will be firmly secured .uponithegfree end portion of Fastener. screwsflll have been provided iso relation to e shoulrlexsLQ-nroviddfatthe by the arms 8 forward end of the casing 39. .From an inspectionof Fig. 5, it will be seen that these shoulders 42 provide an opening in the for- '.Ward end of the casing through which the outer end portion and arms 8 of the nipple 3 may pass and the coupling then turned to position the arms 8 in crossed relation to the Vshoulders 42 as shown in Figzf. The forward or inner end portion of' the sleeve 40 is inwardly thickened toprovide a reduced pocket having a. shoulder 43 adjacent its forward end Ato be engaged'by 44 which is slidably mounted in the pocket 45 and normallyheld against this shoulder by a spring 46. A washer 47 has been provided j between the spring 46 and gasket 44 so that the gasket may be firmly held in place and prevented frombecoming distorted when the From an inspeccoupling is placed in engagement with. the nipple 3, the outer end portion of the `nipple wil pass into the forward end portion of the sleeve 40 and by engaging the gasket 44 will tend to move the gasket and washer towards the hose 36 and thus cause the spring to have a tendency to move the nipple out `o^f the coupling. 'This howeveris prevented engaging the inner faces of the shoulders 42 and the spring will therefore serve to firmly hold the coupling in en gagement with the nipple and further serve to `hold the gasket in tight engagement with the end ofthe nippleand cause all of the grease to be forced through the nipple and prevent it from working around the nipple.

YVhen this device is in use, it will be mounted at any convenient point upon 4the automobile or in a work-shop `upon a workbench or movable carrier. When it is desired to `lubricate the bearings of the autoand iuio the cylinder' 25.

nected with one of the, nipples,

mobile, the coupling- 39 will be 4successively engaged with the nipple provided upon the bearing. After the coupling "has been conthe cylinder 9v will be turned so that it will be moved towards the cylinder 25 and grease will be forced through thehollow piston rod The hose will of coursepbe full of grease and only 'enough grease will be forced under low pressure into the cylinder 25 to fill the cylinder between the inner end of the piston or plunger 35 and the body of the grease inthe hose.

' -T he handle will-now bes'wung in an operative direction and the plunger will be forced inwardly, thus exerting a high pressure up'- on'the grease and forcing this grease from the hose through the valve-controlled inlet nipple 3 into the bearing. If additional grease is necessary to completely lubricate the bearing, the lever-hand 83 will be swung away from the cylinder 9 to draw the =plunger outwardly of the cylinder 25 and the 'cylinder 9 again operated i0 lell the a gasket cylinder 25 and take theplace of the grease which has been forced through the cylinder` and hose into the bearing.' The lever handle will then again be swung in an operative direction and additional grease forced into the bearing. This can be repeated until a sufficient quantity of grease has been forced into the bearing to fill the same. It will thus be seenthat a large quantity of grease can be very easily forced into a bearing. When the device is first put in operation, it will of coursebe'understood that the cylin- `der 9 will be filled turned in an operative direction until the grease has .been forced through the cylinder 25 and completely fills the hose. When the supplyy of grease in the'cylinder '9 is exhausted, the plug 13 will be removed to prevent the formation of a vacuum in the upper portion of the cylinder and the cylinder then turnedl to move it upwardly upon the piston rod and position the piston entirelyl within the lower der. from this lower end portion' or cup'lO and will be filled with grease.

end portion of the lcylin- The cylinder will then beunscrewedo v The plug 13 will then be replaced and vthe cylinder again 'A screwed into engagement with the cup 10.

We claim: 1. In a grease gun, a grease ejecting device including a stationary body and a movable ejector; ak tubular feeder section rigidly joined to said body, a rotatable grease cylinder around Said rigid tubular feeder section andadapt'ed to` be heldin one hand and rotated by the same hand, said cylinder constituting a main supporting handle for the gun, means operatively associated with r said tubular feeder section and said cylinder for fee-ding grease through the former to the ejac-ting device when said cylinder is rotated, and an operating lever fulcrumed to the'aforesaidbody for operating said ejector, said lever being laterally spaced from said rotatable grease cylinder, able toward and from said cylinder and being adapted to bel held in theusers other hand while holding the grease cylinder in the one hand, whereby movement of the two hands toward each other will eject the grease from the ejecting device,.mere rotation of said grease cylinder without removal of either hand from the partgrasped thereby serving to .feed an additional quantity of Agrease tol said ejecting dev-ice.

` 2.- A lubricating device comprising alhigh pressure cylinderf having. a grease inlet and an outlet, a grease ejecting plunger in said cylinder, a heavy tubular piston rod rigidly connected to'said cylinder in communication with said grease inlet, said tubular piston rod having a piston on its outer end, an

elongated low pressure grease cylinder containing said piston and 'having a threaded connection with 'said piston Kod, and e plungeropent i lever ulcrumed to the retraction of the -plun er to force grease into v high pressure cy lndervad operatively con-# the high pressure cy inder. .e nestedl Withsaid plunger, said lever being testimony whereof we have hereunto 10 adapted to be heldin ne hand and-*forced aiiixed our signatures. 4 5 toward the 10Wl pressure eylinder, the latter J OSEPH., BENNETT HAYDEN.

` being then 'adapted to be held in the other y JOHN MORRIS.

hand.k and' turnedefter .each `projection end HARRY CLINTON GEORGE 

